I connected a USRP 2901 (B210) to an amplifier I designed. The USRP seems to shutdown every time I try to transmit. I guess I messed up with the input impedance matching on the amplifier. Is it the impedance mismatch that is causing the USRP to shutdown? If so, how high a mismatch can it handle?
The B210 / NI-USRP 2901 has no problems with an open end condition or a short: You can't damage the transmitter with its own power. There's no significant PA on that board. So, it can handle any mismatch.
Also, shutting down (whatever that means) isn't a reaction anyone included in the hard- or software in reaction to an impedance mismatch.